﻿using LiveShopvnext.Helper;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Volo.Abp.Application.Services;
using Volo.Abp.Domain.Repositories;
using Snowflake.Core;
using Microsoft.Extensions.Caching.Distributed;
using System.Drawing;

namespace LiveShopvnext.Specials
{
    public class SpecialAppService  : ApplicationService ,ISpecialAppService
    {
        public IDistributedCache Cache { get; set; }

        private readonly IRepository<Users.Users, int> _users;
        public SpecialAppService(IRepository<Users.Users, int> users)
        {
            _users = users;
        }

        #region 图片上传
        /// <summary>
        /// 图片上传
        /// </summary>
        /// <param name="file"></param>
        /// <returns></returns>
        [HttpPost]
        public string Upload(IFormFile file)
        {
            string rootdir = AppContext.BaseDirectory.Split(@"\bin\")[0];
            string fname = DateTime.Now.ToString("yyyyMMddHHmmssffff") + System.IO.Path.GetExtension(file.FileName);
            var path = rootdir + @"\Upload\" + fname;
            using (System.IO.FileStream fs = System.IO.File.Create(path))
            {
                file.CopyTo(fs);
                fs.Flush();//清空文件流
            }
            //生成其他规格缩略图
            //生成200*200的
            //源图路径（物理路径）
            var originalImagePath = path;
            //缩略图路径（物理路径）
            var thumbnailPath = rootdir + @"\Upload\" + fname + "_200x200.jpg";
            //调用生成缩略图方法
            MakeThumbnail(originalImagePath, thumbnailPath, 200, 200, "HW");
            //生成400*400的
            //源图路径（物理路径）
            //缩略图路径（物理路径）
            thumbnailPath = rootdir + @"\Upload\" + fname + "_400x400.jpg";
            //调用生成缩略图方法
            MakeThumbnail(originalImagePath, thumbnailPath, 400, 400, "HW");
            string newFileName = "http://localhost:8090/" + fname;
            return newFileName;//将能访问新文件的网址回传给前端
        }
        #endregion

        #region  生成缩略图 
        ///<summary> 
        /// 生成缩略图 
        /// </summary> 
        /// <param name="originalImagePath">源图路径（物理路径）</param> 
        /// <param name="thumbnailPath">缩略图路径（物理路径）</param> 
        /// <param name="width">缩略图宽度</param> 
        /// <param name="height">缩略图高度</param> 
        /// <param name="mode">生成缩略图的方式</param>     
        public static void MakeThumbnail(string originalImagePath, string thumbnailPath, int width, int height, string mode)
        {
            System.Drawing.Image originalImage = System.Drawing.Image.FromFile(originalImagePath);

            int towidth = width;
            int toheight = height;

            int x = 0;
            int y = 0;
            int ow = originalImage.Width;
            int oh = originalImage.Height;

            switch (mode)
            {
                case "HW"://指定高宽缩放（可能变形）                 
                    break;
                case "W"://指定宽，高按比例                     
                    toheight = originalImage.Height * width / originalImage.Width;
                    break;
                case "H"://指定高，宽按比例 
                    towidth = originalImage.Width * height / originalImage.Height;
                    break;
                case "Cut"://指定高宽裁减（不变形）                 
                    if ((double)originalImage.Width / (double)originalImage.Height > (double)towidth / (double)toheight)
                    {
                        oh = originalImage.Height;
                        ow = originalImage.Height * towidth / toheight;
                        y = 0;
                        x = (originalImage.Width - ow) / 2;
                    }
                    else
                    {
                        ow = originalImage.Width;
                        oh = originalImage.Width * height / towidth;
                        x = 0;
                        y = (originalImage.Height - oh) / 2;
                    }
                    break;
                default:
                    break;
            }

            //新建一个bmp图片 
            System.Drawing.Image bitmap = new System.Drawing.Bitmap(towidth, toheight);

            //新建一个画板 
            Graphics g = System.Drawing.Graphics.FromImage(bitmap);

            //设置高质量插值法 
            g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;

            //设置高质量,低速度呈现平滑程度 
            g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;

            //清空画布并以透明背景色填充 
            g.Clear(Color.Transparent);

            //在指定位置并且按指定大小绘制原图片的指定部分 
            g.DrawImage(originalImage, new Rectangle(0, 0, towidth, toheight),
             new Rectangle(x, y, ow, oh),
             GraphicsUnit.Pixel);

            try
            {
                //以jpg格式保存缩略图 
                bitmap.Save(thumbnailPath, System.Drawing.Imaging.ImageFormat.Jpeg);
                //outthumbnailPath = thumbnailPath;
            }
            catch (System.Exception e)
            {
                throw e;
            }
            finally
            {
                originalImage.Dispose();
                bitmap.Dispose();
                g.Dispose();
            }
        }
        #endregion

        #region 验证码
        /// <summary>
        /// 验证码
        /// </summary>
        /// <returns></returns>
        [HttpGet]
        public SpecialsHeiper<string> GetValidateCode()
        {
            
            //生成验证码
            string code = ValidateCode.CreateRandomCode(4);

            //生成 雪花id
            var worker = new IdWorker(1, 1);
            string id = worker.NextId().ToString();

            //保存验证码保存到redis中 设置过期时间
            //这里的 redis中的value需要的是byte[]类型 这里需要转化
            Cache.Set("code" + id, Encoding.UTF8.GetBytes(code), new DistributedCacheEntryOptions
            {
                AbsoluteExpiration = DateTimeOffset.Now.AddMinutes(5) //设置过期时间
            });

            //生成图片文件流
            var result = ValidateCode.CreateValidateGraphic(code);

            //把图片文件流转化Base64
            var Base = ("data:image/jpeg;base64," + Convert.ToBase64String(result));

            //data:image/jpeg;base64,
            return new SpecialsHeiper<string> { 
                Id= id, 
                Base = Base
            };
        }
        #endregion

        #region 给手机发送验证码
        /// <summary>
        /// 给手机发送验证码
        /// </summary>
        /// <param name="userPhone"></param>
        /// <returns></returns>
        [HttpGet]
        public  string phoneValidateCode(string userPhone)
        {
            var data = _users.FirstOrDefault(x => x.usersPhone == userPhone);

            if (data == null)
            {
                return "手机号不存在";
            }

            //生成验证码
            string code = ValidateCode.CreateRandomCode(6);

            //生成短信验证码
            //string ret = CloudInfDemo.sendSmsCode(userPhone, 1, code);

            //保存验证码 设置过期时间
            Cache.Set("code" + userPhone, Encoding.UTF8.GetBytes(code), new DistributedCacheEntryOptions
            {
                AbsoluteExpiration = DateTimeOffset.Now.AddMinutes(5) //设置过期时间
            });

            //生成验证码 保存到数据库

            return "验证码回去成功请等待";
        }
        #endregion


    }
}

